Structural fastener.



Et'S. W. WIEGAND, OF LOS ANGELES, CALIFONIA,

'STRUCTURAL FASTENER.

Specification of Letters Patent.

Application filed July 21, 1913. Serial No. 780,097.

/b all 'zu/lvm it may concern.'

Be it lmown that Unis, lV. lwlneann, a citizen of the United. Statesfresiding at Los Angeles. in the, county of Los Angeles and titato of (,lalifornia, have in.ve.nted-.cerv

'to provide iueans whereby structural form- .lng pieces may be anchored and held in lnoper position with relation to concrete forming the structure.

lt also an object of the invention to provide Vforni holders and spacing` devices of hollow pieces compressed` at certain points to afford holding projections within the saine, the said pieces being thus adapted to receive lag screws or other similar means for anchoring and holding forming boards or other devices with respect to the concrete.

With these and other objects in view the invention comprises certain novel constructions, combinations and arrangements of parts as will be hereinafter fully described and claimed.

lin the accompanying drawing forming a part of this specification:

Figure i is a vertical sectional View through portions of the walh ceilings `or floors of a ceinent concrete building, forining boa-rds being shown secured in position on the parts of the saine.

Fig. f is a sectional View through a pory tion of the forming boards and timbers, and an adjacent wall, spacing and anchoring means for the formation of the floor or ceiling of the structure being shown in side elevation.

Fig. 3 is a detail View of a structural fastener partially in side elevation and par tially in section illustrating the manner of forming threads therein upon a mandrel.

llig. el is a detail perspective view of an anchoring means for a ceiling or floor and for holding shaping boards 'and afterward other fixtures thereto.

The present inventionis designed to afford means to facilitate the proper forma-A tion of the successive portions of a ceinn;

concrete structure and to properly hold the forming boards andpieccs in position for this purpose. rlhe invention is especially designed also to provide a fastener for supporting and holding the forming boards and pieces in position, said fastener being also adapted to afford means for securing lixtures, piping and other articles to the wall and ceiling of such concrete structure.

The details and features of the invention will now be. specifically described reference being had to the drawing in which il indi 'ates a structuraly .fastener adaptedto act also as a spacing member and a shorter forni of fastener which is not designed to extend all the way through walls, ceilings or floor.

In forming the vertical walls of a cement building or like structure, it is necessary to provide holding and shaping means for receiving the concrete cement when in plastic or semi-liquid forni, so as to hold the saine until it is set or hardened in proper shape. The forms frequently employed may be made of boards 3 secured to bars 4 which are arranged to extend transversely of the boards. Such forms are set up to shape the inner and outer surfaces of the concrete structure and while they should be bound together, they should also bel properly spaced with respect to each other. For this purpose structural fasteners l are interposed between the boards 3 of the inner and outer forms. Timbers 5 are laid against the outer edges o-f the bars i and bolts 6 are passed through said timbers 5, their inner ends being screw threaded and adapted to engage interorly arranged threads in said structural fasteners l as clearly shown in Fig. l of the drawinfr.

Vllashers 7 are preferably interposed between the ends of said structural fasteners and .the boards 3 to prevent said ends from becoming embedded in the surface of the boards.-

The formation of the said structural -fastenere 1 forms an important feature of the `invention. W'hile the -fastener inay be of any hollow or .tubular material having screw threads in its ends,'it is preferably made of piping of suitable'diameter which is placed 'between dies to crimp the saine upon a suitable former or mandrel' 8. It is usually sufficient to crimp or force inwardly theend portions of said pipe or tubes for.

this purpose. The dies, not shown, may be of any usual type but are provided -with in ner surfaces 'adapted to form, when brought together, a spiralshaped impression 9 upon the outer surface of the. pipe-forming the fastener 1 as clearly shown in Fig. 3. By .inserting a mandrel 8 in thevend of the pipe before the dies are broughtv together thereon, the impression made by the dies will swage the metal inwardly between the threads of the mandrel ,as clearly shown in Fig. 3 and thus form interior threads `10 adapted to receive the screw threaded ends of the securing bolts 6. lf the threads formed are not sufficiently pronounced, a

cutter having thread forming cutting edges y may be turned in the ends of the lfastener before using the same;4 The crimping of the ends of the pipe just described also'reduces the diameter of the pipe exteriorly to some extent as shown in Fig. 3 and the hold of the cement concrete upon said pipe after it has been flowed about it and allowed to set is correspondingly strong.

This manner of producing fasteners is also of importance in that cheap and further, produces fasteners which are more effective than. if the inner surface of vthe Ipipe or tubes were only threaded in theusual Way. The fasteners are left embedded in the cement concrete of the wall or other portion of the structure and afford means for attaching any desired materials or fixtures to said wall where desired. Where it is not wished to use the same for this purpose, the spaces occupied by the washers are smoothed over with nement, thus covering the ends of the tubular fastening as indicated in` Fig. 1 of the' drawing. The forms vare of course removed when the Wall structure has be- I come suliiciently hard and the` said forms are set up again to provide for the formation and construction of upper portions of the' wall structure'of the building. Where doors or ceilings are formed, the form just below vthe ceiling upon the inner surface of the vertical wall is held in position by a "beam 11, bolted to some of the structural fasteners 1 and ceiling supporting beams12 are llocated with their ends 'resting thereon and on the ends of the 4upright bars 4. These beams may be connected by angle plates 13 as' shown in Figs. 1 and2. Surface boards'14'and'15 are'then placed upon the beams 12 'to receive the concrete of the ceiling and the floor, said boards being either set loosely in place or fastened in any desired. manner to the said beams 12. To facilitate a proper and smooth formation of the upper surfaceI of said ceiling or licor a further form securing beam, as 16, is applied in the upper angle formed between the vertical Wall and the floor. This beam may be secured to spacing structure fasteners l concrete.

it is commercially messes y arranged both in the vertical wall and in Athe ceiling asillustrated in Fig. 1. The beam 16. forms a guide for the drawing of a smoothing board over the upper surface of the ceiling or floor concrete, said smoothingV board having a proper. notch in its end to iit upon the beam 16 and yet reach and move flush with the bottom of said beam. lt is preferable to carry a portion of the vertical wall at least to the height of the 7'5 top of the beam 16 to properly receive and position forms for the wall that is to be built above.- l

In the ceiling or Hoor it is usually desired to place reinforcements in a more or less g@ central position between the surfaces of the For this purpose the vstructural fasteners maybe made approximately in half lengths as shown in Fig. 4. ln this instance one end is'crimped and screw thread 85 ed i( as at. 17, while the other end' is split and the prongs thus formed are turned out` Wardly to provide anchoring means and reinforcement holding projections. Thus two -oppositelyarranged lprongs 18 may be ar- 90 ranged at such an angle as to support the reinforcement bar 19 between them, and two pron s as 20 .may be bent out of the Way of said ar this forming more effective anchoring means for the fastener. After the boards 15'for the ceiling have been set in place, as many fastenersQ may be put into position as desired and the reinforcing bars of anypreferred shape may be rested there on, whereby they will be held above the boards 15 so as to be properly embedded in the cement concrete of said. ceiling .or iioor as clearly indicated in the. drawing.

' ln many structures also it is desired to suspend piping or other lfixtures from the ceiling. For this purpose the anchoring pieces 1 and -2 located in the ceiling may be 'en gaged by eye/boltsQl to which such fixtures may be attached. rlhe proper ajrangement of the fasteners 2 for the suppof'ling of the 11C ipes of overhead fire sprinkling systems Vas in large buildings or stores, affords a ready anchoring means for the piping thereof as illustrated inFig. 1. Hangers 22 inclosing .the pipes can readily be hooked upon the 11 eye bolts 21. lt will be evident of course that any articles or fixtures can be secured --to said embedded fastener Without departing from the spirit of the invention. The crimped ends of the fasteners 2 are prefer- 124 ably formed in the same maenner as' the ends of the fasteners 1 above described.

lt will alsodbe evident from the above description that the structural fastening `means may be adapted. to the arrangement 12 of spacing boards or materials used in all kinds of cement structure and for various kinds of buildings. The fasteners are cheaply made and may therefore be left embedded in the cement for strengthening the 13 lessees struetnre as well as affording holding means for anything that is to be fastened to Walls or ceilings. The use of the angle plates 13 greatly facilitate the, securing vof the beams l1 and l2 together and by applying them in the angles of their meeting edges as shown in Figs. l and 2 of the drawing,- may be used for securing each of the flanges of the said platesvto the said beams. The plates, however, are provided with two apertures at each end so that they may be set upon either side of the beams at their meeting points and either hole at either end thereof may have the securing bolts pass through it. The plates are thus capable of use interchangeably as rights or lefts. The manner of securingl the. bolts, one in each iange ofthe angle plates 13 makes it impossible for the parts to get out of position even though one bolt only be used at -eaeh end of the plates.

lWhat is Claimed is:

.. A structural fastener comprising a tubular spacing member having a crimped end portion whereby holding means is provided interiorly in Vsaid fastener.

2. A structural fastener comprising a tubular spacing member having its end portions erimped and formed with spiral in dentations whereby securing screw threads are formed upon the inner surface thereof, said threads being adapted to receive and hold screw threaded bolts.

3. A structural fastener and spacing member having its VWalls contracted and bent to a single bolt form interior threads and formed with outwardly end flaring portions constituting anchoringv means, said fastener forming spacing means for the structure and eooperating bolts adapted to screw into the ends of said member for fastening articles 'to said fastener.

The combination with forming boards, beams and securing bolts, of a tubular structural fastening device adapted to space said forms from each other, and crimped end portions formed with securing threads in the same for receiving the ends of said bolts, and Washers interposed between the forms and the ends of said fasteners.

' 5. A structural forming apparatus comprising the combination with forming boards and holding beams, of structural spacing members adapted to positively space and hold the said boards and beams preparatory to the forming of a, concrete strncture, and having reduced screw threaded end portions Aforming abutment ends, beam holdingr plates, and tap bolts adapted to screw into either or both ends of said spacing members, whereby' forming boards, beams and "plates may be held against the ends of said spacing members according as each or all lmay be used.

In testimony whereof, I have hereunto set my hand, in presence of two Witnesses.

f CRIS. W. WIEGAND. Witnesses:

Cassani, Snvnnanor.,

- Lm Votum. 

